Add Parameter. on Task Failure 方法
Get a task is considered to have failed if has a failureInfo. A failureInfo is set if the task completes with a non-zero exit code after exhausting its retry count, or if there was an error starting the task, for example due to a resource file download error. The default is noaction. Possible values include: 'noAction', 'performExitOptionsJobAction'.
public OnTaskFailure onTaskFailure()
the onTaskFailure value